IPv6 Videos

We are in the process of creating some videos to illustrate the impact IPv6 may have on your network. IPv6 may seem far away to you, and you may not have a plan to implement it. However, modern operating systems will frequently enable IPv6 tunneling protocols by default. As a result, you end up with covert channels bypassing your perimeter protection. These videos will focus on this issue.

Video 0 - Multicast DNS

Video 1 - IPv6 Router Advertisements

If a client is able to connect to a server via IPv4 or IPv6, IPv6 should be
prefered. However, today's IPv6 connectivity frequently uses tunnels and
proxies, causing IPv6 to be slower then IPv4. In order to provide the best
possible user experience, Google implemented the "Happy Eyeballs"
algorithm in Chrome. This algorithm will fall back to IPv4 faster and provide
a better user experience. However, it will make the browser somewhat
unpredictable.

Video 4 - IPv6 and Teredo in Windows 7

Video 5 - Detecting and Blocking IPv6 in Linux

IPv6 traffic is not filtered by iptables. Instead, ip6tables has to be used. This video shows how iptables is ineffective and how to use ip6tables. We also discuss the proper use of tcpdump to detect IPv6 traffic.